读取配置文件包含properties和xml文件详解编程语言

/** 
 * 读取配置文件 
 * @author ll-t150 
 */ 
public class Utils { 
     
    private static Properties props = new Properties(); 
    private static InputStream inputStream = null; 
    private static String confPath = null; 
     
    static { 
        confPath = System.getProperty("conf"); 
        try { 
            if(!StringUtils.isEmpty(confPath)){ 
                inputStream = new FileInputStream(confPath.concat("/dinpay-sync.properties")); 
            }else{ 
                ClassLoader cl = Utils.class.getClassLoader(); 
                inputStream = cl.getResourceAsStream("dinpay-sync.properties"); 
            } 
        } catch (FileNotFoundException e) { 
            e.printStackTrace(); 
        } 
        try { 
            props.load(inputStream); 
        } catch (IOException e1) { 
            e1.printStackTrace(); 
        } 
    } 
     
    public static String getString(String key){ 
        String val = null; 
        val = props.getProperty(key); 
        return val; 
    }

 private static AbstractApplicationContext appContext = null; 
    private static final String XML_EXPRESSION = "classpath*:applicationContext*.xml"; 
 
    static { 
        // 后续来读取命令中的conf 例如 java -Dconf=conf/*.xml -classpath .:lib/* 
        if (System.getProperty("conf") != null) { 
            appContext = new FileSystemXmlApplicationContext(System.getProperty("conf").concat("/applicationContext-sync.xml")); 
        } else { 
            appContext = new ClassPathXmlApplicationContext(XML_EXPRESSION); 
        } 
    } 
 
 appContext.registerShutdownHook(); 
 appContext.start();